Eli took the fleet of 8 vans for oil changes. All of the vans needed windshield wipers which cost per van. The total bill was $432. How do you write an equation to $24 find out what each oil change cost and solve the equation?

Answer 1

Julia Adams

I think that the #$24# landed in the wrong place....!

Since you have eight vans, you will undoubtedly need to spend:

#8xx24=$192# for the wipers.

Let us call the cost of one change of oil #x# so that you get for the total and for the #8# vans:

#8x+192=432#

reorganizing

#x=(432-192)/8=$30# which is the cost of one oil change.

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Answer 2

Hazel Anglin

Let x = cost per van for oil change Equation: 8x + 8(24) = 432 Solution: x = $36

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.